import 'lib/Wallet.dart';


main(){
  //1.创建钱包对象
  Wallet wallet = new Wallet();
  //2.1取钱
  wallet.saveMoney(100);
  //2.2打印余额
  wallet.printBalance();
  //3.1取钱
  wallet.getMoney(50);
  //3.2打印余额
  wallet.printBalance();
}